Seam for uniting materials.



PATENTED JUNE-.18, 190'?.

APPLICATION FILED 0012-2?, 1905.

UNrTEn sTATns PATENT OFFICE.

JOHN-o. rvoRY, or NEWTON, New HAinsHmE, AssieNoR- To DANIEL n'ronrrsfrinr, TRUSTEE, or BOSTON, MASSACHUSETTS.

SEAM FR UNTlNG MATERIALS.

To @ZZ whom Wawy concern:

Be it known that I, JOHN C. IVORY, of N ew` very e'xible connection orseam beta/een the parts, to reduce the amount, as well as the cost ofthe'material used in forming the seam, and; to produce a level surfaceon the sole when hn'ished The `invention consists in the use of two.lthreads, one a continuous thread or cord having bights or loops Jformedat intervals in its length which bights or loops are placed or drawnthrough a series of perforations in the arts to be united thereby, onebight or loop or each perforation, combined with another and preferablycheaper thread cut into seetions, each section forming a nd or toggleinser-ted through each bight or loop of the oontinuousthread on theopposite side oi the maf terial or the between substance, to that ofthe.continuous thread, said inserted iids or toggles being independent anddetached from each other between each two bights or loops onthe'continuou's thread, thus forming an independent locking member foreach bight or loop.

The invention is' carried out substantially as illustrated on theaccompanying drawing,

which forms an essential par/t of this speciiilcation, and whereon likecharacters of reference refer to like parts whereverthey occur on thedifferent parts of the drawing.

. 0n the drawing: lvFigure l represents aseoH tional view of twovpieceswhich are to be united, showing the same connected 'bymyimproved seamwhena singleY cord isused as ther locking member. Fig. 2 represents asimilar view toythat shownin Fig. l, but

showingmy improved seam when 4a-.loop'of thread or cord is used asv/alocking means. Fig. 3 represents a-detail'sectionof theseamused as a.connection vbetween the upperl and 'thesole of a turn-shoe. ,'Fig.4Irepresents a sirrular...detail section, my improved Specification ofLetters Patent. Application and october 27,1905. serai No.l 284,659.

Patented .Tune 18, 190.7'.

seam .used to connect the upper and welt to the inner sole of aWelt-shoe. f Fig. 5 represents a detail plan view of a portion of thesole of a vboot or shoe in which my improved seam is used in forming thefair-seam'to unite the outer and the inner soles, or to unite the outersole to the Welt of a weltboot or shoe. F ig. 6 represents a sectionalsideelevation of 'that portion of la boot or shoe shown inFig./5.

in forming the seamsl which connect the upper to the soles of boots orshoes, or the outer soles to the inner soles, -or to the welt, and moreAespecially in connecting the uppers to the soles of turn-shoes'it isvery desirable that the seam should be made as flexible as is possible,so as so'add to the iiexibility of the boot or shoe and to the comfortand ease of the wearer. It is also desirable that `the amount of themore expensive threads or cords used in making the seam should bereduced as much as possible by the introduction of a less expensive butequally serviceable material in the parts of the seam which will admitof such an introduction, as a suband thus keep the surface of the soleas level as possible'ai'ter theseam has been covered by the finishinglip. YIt isl the object of my present invention to produce a veryflexible seam, and also to reduce the' amount of the Jrine uavlity orexpensive'thread used, by the use o locking members which are made fromless expensive` material and to so arrange the locking members or ids,as to occupy as little space as possible. within the channel made toretain such locking members.'

The seam consists of a continuous thread 1, which is usually aWax-thread or other strong and expensive thread. Y thread 1s formed.into a series of bights or loops 2, which are drawn, inserted, or other-;Wise placed Within a. series of perforations 3, rvmade in the 'piecesvor layers 4 and 5 ofthe f This continuous IOO material to be unitedbythe seam and so that y ktheen'ds of'thebights or loops extend throughsaid perorations and 'proiilct on the: opposite side-thereof'to thaton`thread is:l The intermediate portions of the .continuous thread, -which-is nc'tweenv Kthe bights or loops thereof, efst against the sur-l chthe continuous tace of the layerg of the material being united by theseam. On the opposite' side .of the material, resting-against thesuriaceof the layer 4 thereof, and inserted Within each rojecting end oi thebights or loops 2, is a s ort cross orlocking member which forms a id ortoggle and which may consist of a single cord or thread 7 ofV cheapervmaterial than the Vthread 1, and substantially as shown in Fig. 1; orsaid loc members may onsist--of a bigjht or loop 8 o such cheapermaterial and su stantiallyv as shown in Fig. 2. use a cheap gradcgcfcord ortwine informing these locking members, as the same issuiiiciently, bulky and flexible to perform the function of such.locking members.

or loops 2, prevent such bi hts or loops fro l111g `drawn backward ough'the perforations in the material, when the thread 1 of 'the seam isbeing drawn tight to hold the parts firmly in` their proper places: 1

Each of the .lockingl members is detached. and inde endentoft bershantherefore does notrcause any rigid.- ity in the seam, or in t e partswhich are .united by the seam, but eaves the parts as well as the seamperfectly free to move, as the locking members are free to move with-thesurface of the part .of thematerial against which the locking membersrest. l l

As the tensile' strength of the locking mem` bers is notnecessary toenable them to, perand as theirbulk is the it will be seen that thethese locking members form their function, only thine' necessar materialfrom whic are formed may be any kind of cheap cord or twine, such as'utetwine, while the thread 1, which retains t e layers or parts of themateri `l in their roper united positions by its tensile strengt must beof some stronger and 'more expensive material, .such as a waxed linen orother thread. y l `My im'proved seam is designed for use 1n theManufacture of Vboots and shoes, and

more especially in uniting the `solesa'nd upers. V1t maybeused informingthe seam etweenthe u perQand the sole 10 of a` -tlirxi-slioeg as-shownin Fi 3, or it may be used as the seam between t e upper 11, inner sole12, and the Welt 13, of a welt-shoe, as shown in Fig. 4, or it may formthe fairstitch seam 14, which connects the outer sole h5 to the Welt 16and upper `17 of a welt-boot or shoe, as shown in Fi f'. 6 and in eitherlcase the locking member or Klie`"lorlgitudinally within the channeformed on the artsto be united by the seam, and'in line wit the seamformed in said channel so as to occu as little space as is possibletherein. stitch seam, the thread may be'drawn suiii-` ciently tight tocause the locking members to be drawn into the perforati f the bightsforloops are located,I and to such I preierfto This series of ldsorltoggles Within the `be5 e other locking meme' d is s o arran ed as toven the seam forms the fair-' ns withinwhich an extent as to cause themto double uponv themselves and to become U-shaped, as shown in Fig. 46.This 'is more partlcularly the case when the locking members are madefrom less bulky.. and very flexible material, such as a small soft twineor cord. After the seam has been formed, it is covered by a lip as isusual insuch cases, and as zthe iids are arranged so asv to occupy aslittle space as possible within the channel formed to receive ,theseam,.the surfacewhich is exposed after the seam has been covered by thelip will remain substantially level. l

I am aware that it is not new to unite material by aseam formed fromacontinuous thread having loops [therein which lpass throu l1perforations in vthe material being unite combined with independentlocking"- membersor ds inserted within Vsaid loops, and therefore I donot claimf such a construct tion broadly, but I believe that I am thefirst one toform a seam oi' this class, in *which two threads are used,one being severed so as to' form anindependent locking member or dforeach loop on' a continuous thread, which locking' members or iiclswill be, arranged so as to extend longitndinallyin line with the series(of loops on the continuousthread, Wherebya veryneat and exible seam isproduced; Which Will.v occupy very littlespace 'withini the channelformed upon the surface of -thematerial for the reception of the seam,and which seam can therefore becovered by the flnishin lip of thechannel leaving substantially a evel surface on thematerial with theseam completely covered.

Having thus fully described the' nature, construction, and the operationof my invention, I` Wish lto secure by Letters Patent andy to claim: -1

A seam consistin of pieces `of over-lapped, erforated materia one pieceof material havinga channel and a lip over hanging the, channel, acontinuous thread having a series of loops formed. throughout its lengthand passed through alining perforations of the pieces of material, and-a locking member disposed between the bi ht portion of each loop EOSand the'` outer face o the channeled piece ofy material with the bightends vof the loops formed Jfor disposition in the? channel beneathsaidlip which overlaps the channel,

eachlocking memberbeing arranged longitud inally in line'with the seriesof perorations oi the material and with the portions of the 'continuousthread intermediate the loops of the. latter, the locking `members beingspaced and independent of one another.

In testimony whereof I have valixed my signature, inpresence of twowitnesses. l 1

'p JOHN c. ivoRY. VVitnes'ses: l

"J'oHN JIRYAN, V 'J1-E. KEMPSTE'B..

